Patent
Optical shaft angle encoder
Howard C. Epstein,John Uebbing +1 more
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TLDR
In this paper, an optical comparator has three bifurcated and truncated lenses, each lens having two siamesed and truncate elements having closely spaced optical axes, resulting in an optical encoder having a low sensitivity to eccentricity errors.Abstract:
An optical comparator has three bifurcated and truncated lenses, each lens having two siamesed and truncated elements having closely spaced optical axes. This results in an optical encoder having a low sensitivity to eccentricity errors.read more
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Optical positional encoder comprising immediately adjacent detectors
TL;DR: In this article, the light detectors are interdigitated such that they are adjacent to one another and receive information from two channels, and the output signals are combined electronically in pairs forming quadrature push pull signals.
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Henry Guckel,Shamus McNamara +1 more
TL;DR: In this article, the photodiodes are formed of spaced regions in a base layer, each spaced region having an impurity type opposite to that of the base layer to define a p-n junction between the spaced regions and the substrate.
References
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Patent
Shaft angle encoder
TL;DR: In this paper, an optical shaft encoder consisting of a drum adapted to rotate with the shaft and having light transmissive slots is presented. Light from a source positioned within the drum passes radially through the slots, and is projected upon a slotted stator element positioned outside the drum.